KR0134550B1 - Three-beam separation type projector - Google Patents

Abstract

The present invention relates to a projection angle adjusting device for a three-beam separation type projector, comprising: a guide member coupled to a conventional driving means composed of a motor and a transfer screw and linearly moved back and forth according to a driving direction of the driving means; The projection lens is mounted on the front and rear surfaces, and a pair of fitting holes are formed at a predetermined bottom surface, and a single upper tube is moved back and forth and vertically moved up and down according to the front and rear linear movement of the guide member when it is coupled to the upper portion of the guide member. ; Projection lenses are mounted on the front and rear surfaces, and the guide rollers are rotatably rotated at the front and rear predetermined positions of the bottom, respectively, and the guides are centered on the upper and lower sides of the guide member in such a manner as to be movable left and right by the transfer guide pieces. A pair of lower barrels which are linearly moved simultaneously in the front and rear and left and right directions according to the linear movement of the member; An upper plate having a lifting guide hole of a diagonal line for guiding vertical movement; A cross link folded in a vertical direction and a left and right direction about a hinge point according to the front and rear movement of the upper barrel in a state of being fitted between the upper barrel and the upper plate; It is fixedly installed on the bottom surface of the housing, the upper surface predetermined position is composed of a lower plate formed with a trajectory groove obtained by the calculation formula that the guide roller on the lower barrel is fitted, each barrel constituting the three-beam separation type projector is determined. In this case, the focusing and alignment operation of the screen projected on the screen through each barrel can be simultaneously adjusted while interlocking and adjusting within the trajectory range.

Description

Projection Angle Adjuster of 3-beam Separation Projector

1 is an exploded perspective view showing the back of the projection angle adjusting device of the three-beam separation type projector according to the present invention,

Figure 2 is an exploded perspective view showing the coupling relationship between the guide member and the lower barrel in the projection angle adjustment device of the three-beam separation type projector according to the present invention,

3 is an exploded perspective view showing a coupling relationship between the lower barrel and the lower plate in the projection angle adjusting device of the three-beam separation type projector according to the present invention;

4 is a cross-sectional view of the coupling state of FIG.

5 is a perspective view showing a rear surface of the projection angle adjusting device of the three-beam separation type projector according to the present invention.

* Explanation of symbols for main parts of the drawings

10: straight guide 12: lifting guide

14: upper plate 20: upper barrel

22: cross link 24: lower plate

26: track groove 30: lower barrel

32: guide roller 38: drive means

40: guide member 54: transfer guide piece

The present invention relates to a projection angle adjusting device of a three-beam separation type projector, and more particularly, by projecting the same projected object on one screen at the same time in a state in which equilateral triangles are installed at positions spaced apart by a predetermined distance from the front of the screen. Three projectors corresponding to R (Red), G (Green), and B (Blue) colors forming a stereoscopic image are projected on the screen by simultaneously adjusting them in a defined trajectory range by the action of a single drive motor. The present invention relates to an apparatus for adjusting the projection angle of a three-beam separation type projector so that screen focusing and screen alignment operations can be properly performed.

As is well known, the three-beam separation type projector installs three barrels corresponding to R, G, and B colors at a predetermined distance from the front of the screen to project the same projected object on one screen through each barrel. It is a device that allows the viewer to feel the three-dimensional effect by overlapping the screen. If the distance between the screen and each barrel and the distance between the barrels are not exactly matched in such a three-beam separation type projector, The image is not matched on the screen, and the screen is not imaged properly on the screen, which results in a disadvantage that the image quality formed on the screen is deteriorated and the visual perception is lowered.

Therefore, in order to exactly match the screen alignment and the focusing in the three-beam separation type projector, the adjustment of the barrel is inevitable. In the conventional case, the projection of the screen from each barrel to the screen does not coincide with each other. If the distance between each barrel is inadequate and the focusing adjustment is not done properly, the adjustment is very necessary because the projection direction and the projection angle must be adjusted while moving one or more barrels in the direction of correcting the inconsistency with respect to the relative barrel. It is cumbersome and inconvenient, and also because the adjustment work must be performed by manual operation while watching the screen on the screen, there is a problem that accurate adjustment is impossible unless a professional engineer.

The present invention is to solve such a conventional problem, the object is to project on the screen through each barrel by adjusting the respective barrels constituting the three-beam separation type projector at the same time within the specified trajectory range adjusted. It is an object of the present invention to provide a projection angle adjusting device for a new three-beam separation type projector that enables simultaneous focusing and screening operation of an image.

In order to achieve the above object, according to a preferred aspect of the present invention is combined with the conventional drive means consisting of a motor and a feed screw coupled to the linear guide member according to the drive direction of the drive means; Projection lenses are mounted on the front and rear surfaces, and a pair of fitting holes are formed at predetermined positions on the bottom, and a single upper barrel is moved back and forth and vertically moved up and down according to the front and rear linear movement of the guide member when coupled to the upper portion of the guide member. and; Projection lenses are mounted on the front and rear surfaces, and the guide rollers are rotatably rotated at the front and rear predetermined positions of the bottom, respectively, and the guides are centered on the upper and lower sides of the guide member in such a manner as to be movable left and right by the transfer guide pieces. A pair of lower barrels which are simultaneously linearly moved in the front and rear and left and right directions according to the linear movement of the member; fixedly installed on the inside of the upper surface of the housing and linearly guiding the front and rearward movement of the upper barrel along the longitudinal direction on one side of the housing. An upper plate having a lifting guide hole for guiding the ball and up and down movement; A cross link that is folded and unfolded in the vertical direction and the left and right directions about the hinge point according to the front and rear movement of the upper barrel while being fitted between the upper barrel and the upper plate and coupled thereto; A projection angle adjusting device for a three-beam separation type projector is provided, which is fixedly installed on the bottom surface of the housing and has a lower plate formed with a track groove obtained by a calculation formula in which the lower roller guide roller is fitted at a predetermined position on the upper surface.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exploded perspective view showing the rear surface of the projection angle adjusting device of the three-beam separation type projector according to the present invention. In accordance with the present invention, the projection lens 16 is mounted on the front and rear surfaces while being fixed to the inside of the upper surface of the housing. The projection lens 16 is mounted on the front and rear surfaces at the lower part of the upper plate 14 having a structure in which the linear guide hole 10 and the diagonal lifting guide hole 12 are formed at the front and rear predetermined positions of the pair. An upper barrel 20 having a fitting hole 18 formed therein is installed, and the upper barrel 20 is a cross link fitted through a straight guide hole 10 and a lifting guide hole 12 on the upper plate 14. Coupled to (22), it is installed to be capable of linear movement forward and backward and vertical movement. In addition, a pair of lower parts having fastening holes 28 formed in the center of the upper surface while the projection lens 16 is mounted on the front and rear surfaces in each of the axial grooves 26 formed on the upper surface of the lower plate 24 fixed to the bottom surface of the housing. Guide rollers 32 protruding from the bottom of the barrel 30 are fitted and engaged. Between the upper barrel 20 and the lower barrel 30 in a driving direction of the driving means 38 in a state in which it is coupled with a conventional driving means 38 consisting of a motor 34 and a transfer screw 36. Accordingly, the guide member 40 is provided to apply power to the upper barrel 20 and the lower barrel 30 while moving back and forth in a straight line.

Here, according to the present invention, the guide member 40 is preferably made of a T-shaped plate, the rear end of the feed screw insertion groove 42 of a predetermined depth is formed, the upper surface of the body at the predetermined position of the upper barrel ( A pair of coupling pins 44 fitted to the fitting hole 18 formed on the bottom of the 20 is protruding, and the guide hole 46 of a predetermined length in the left and right directions is formed on both ends.

In addition, according to the present invention, the cross link 22 has a structure in which a pair of link pieces 48 and 48 'are cross-coupled so that they can be folded freely in the up-down direction and the left-right direction about the hinge point formed at the center. Will have

On the other hand, in the present invention, the upper barrel 20 is a projection protrusion 50 is coupled to the lower end of one link piece 48 constituting the cross link 22 at the front and rear predetermined position of one side of the upper surface, At a predetermined distance in parallel with the coupling protrusion 50, a guide groove 52 is formed to which the lower end of the other link piece 48 'is fitted.

2 is an exploded perspective view showing a coupling relationship between the guide member and the lower barrel in the projection angle adjustment device of the three-beam separation type projector according to the present invention, and is conveyed through guide holes 46 formed on both sides of the tip of the guide member 40. The guide piece 54 is fitted, and the transfer guide piece 54 and the lower barrel 30 are fixedly coupled to each other by the screw 56. In such a structure,

The transfer guide piece 54 has a guide protrusion 58 which is fitted to the guide hole 46 at the inner end of the bottom surface thereof, and a screw insertion hole 60 is formed at a position adjacent to the guide protrusion 58. The boss 62 protrudes.

At this time, the departure prevention piece 64 is fastened to the guide protrusion 56 on the transfer guide piece 54 so that the guide protrusion 58 is not separated from the guide protrusion 58.

3 and 4 are separated perspective views showing the coupling relationship between the lower barrel and the lower plate in the projection angle adjusting device of the three-beam split type projector according to the present invention. The guide roller 32 is provided with a double annular rib 68 at regular intervals at the lower end of the rotation shaft 66, the track groove 26 on the lower plate 24 is guide rollers on the left and right sides thereof. An annular rib 68 on the 32 is inserted into the slide groove 70.

In the present invention, the motor 34 constituting the driving means 38 is configured to be electrically connected to a control switch on the control panel.

Next, the operation of the projection angle adjusting device of the three-beam split type projector according to the present invention will be described.

As shown in FIG. 5, when the control switch on the control panel is pressed in a predetermined direction in order to precisely overlap the screen of the projected object formed on the screen, the guide member 40 is driven while the corner 34 is driven in the predetermined direction. The feed screw 36 inserted into the feed screw insertion groove 42 formed on the rear side of the c) is rotated in the same direction as the rotation of the motor 34 so that the entire guide member 40 is linearly moved forward or backward. An upper barrel 20 fitted into the coupling pin 44 formed on the upper surface of the guide member 40 and a lower barrel 30 coupled by a transfer guide piece 54 to both ends of the guide member 40. Are linearly moved forward or backward simultaneously along the linear guide hole 10 on the upper plate 14 and the track groove 26 of constant curvature on the lower plate 24, respectively.

During the straight forward or backward movement, the lower barrel 30 is gathered centrally or laterally with respect to the reference line by the action of the trajectory groove 26 and the conveying guide piece 54, and the upper barrel 20 is By the folding action of the elevating guide hole 12 and the cross link 22, the elevating movement away from or in proximity to the lower barrel 30.

For example, assuming that the guide member 40 is linearly moved from the rear to the front by the action of the driving means 38, the upper barrel 20 and the lower barrel 30 are respectively a straight guide hole (10) and The front barrel 20 moves upward along the track groove 26, and the upper barrel 20 moves upward by the unfolding action of the cross link 22, while the lower barrel 30 is disposed on the guide member 40. Due to the left and right transfer action of the transfer guide piece 54 coupled to the guide hole 46 is to be separated from each other from the center line.

On the contrary, when the guide member 40 is linearly moved from the front to the rear, the lower barrel 30 is gathered about the reference line as opposed to the movement in the front, and the upper barrel 20 is moved backward. The lower barrel 14 and 14 'and the upper barrel 20 are collected by the folding action of the cross link 22.

During such projection angle adjustment, the guide roller 32 on the lower barrel 30 is slide-driven in the trajectory groove 26 on the lower plate 24, and the upper barrel 20 and the lower barrel 30 The projection angle adjustment is appropriately made as the user controls the driving of the motor 34.

According to the projection angle adjusting device of the three-beam split type projector according to the present invention, the three barrels corresponding to the R, G, and B colors are moved back and forth through the guide member, which is moved back and forth linearly by the driving means. Since it is adjusted while interlocking in the left and right and up and down directions, there is an effect that it is possible to more accurately match the screen projected on the screen, there is an effect that it is easy to operate even without a professional technician because the operation is simple.

Claims (3)

A guide member (40) coupled to a conventional driving means (38) consisting of a motor (34) and a feeding screw (36) and linearly moved back and forth in accordance with the driving direction of the driving means (38); As the projection lens 16 is mounted on the front and rear surfaces, a pair of fitting holes 18 are formed at predetermined positions on the bottom surface thereof, and in accordance with the linear movement of the guide member 40 in the state coupled to the upper portion of the guide member 40. A single upper barrel 20 which is moved back and forth and vertically moved up and down; As the projection lens 16 is mounted on the front and rear surfaces, the guide rollers 32 protrude from the front and rear predetermined positions of each bottom so as to be freely rotatable. A pair of lower barrels 30 coupled to each other by a left and right transportable and linearly moved simultaneously in the front, rear, and left and right directions according to the front and rear linear movement of the guide member 40; It is fixedly installed inside the upper surface of the housing, and the linear guide hole 10 for guiding the front and rear direction movement of the upper barrel 20 along the longitudinal direction on one side of the upper surface and the lifting guide hole 12 for guiding the vertical movement are formed. An upper plate 14; An intersecting link 22 that is folded between the upper barrel 20 and the upper plate 14 in the up and down direction and the left and right directions about the hinge point according to the forward and backward movement of the upper barrel 20 in a coupled state; It is fixed on the bottom surface of the housing, the upper surface predetermined position consisting of a lower plate 24 is formed a track groove 26 of a constant curvature is inserted into the guide roller 32 on the lower barrel 30 Projection angle adjusting device for beam separation type projector. According to claim 1, wherein the guide member 40 is made of a T-shaped plate, a feed screw insertion groove 42 of a predetermined depth is formed at the rear end, the upper surface of the body at a predetermined position of the upper barrel 20 Projection angle adjustment of the three-beam separation type projector, characterized in that a pair of coupling pins 44 to be fitted to the fitting hole 18 formed in the bottom surface, the guide holes 46 of a constant length in the left and right directions formed on both ends. Device. According to claim 1, The transfer guide piece 54 is provided with a guide projection 58 is inserted into the guide hole 46 at the inner end of the bottom surface, the screw insertion hole in a position adjacent to the guide projection 58 Projection angle adjusting device of a three-beam separation type projector, characterized in that the fastening boss 62 is formed (60).